Shuttle-box-operating lever for looms



(No Model.) I 2 Sheets-Sheet 1.

J. A. EVANS. SHUTTLE BOX OPERATING LEVER FOR LOOMS. No. 405,022.Patented June 11, 1889.

WITNESSES INVENTOR:

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QKZW I ATTORNEYS.

N. PETERSPPIoln-Lflmgnphun Washingmm n. c.

(No Model.) 2 Sheets-Sheet 2.

J. A. EVANS. SHUTTLE BOX OPERATING LEVER FOR LOQMS.

No. 405,022. Patented June 11', 1889.

WITNESSES: Ill/V IVTO/i':

-W f f w w BY JIM ATTORNEYS.

N. PETERS. Fhnh-Lilbogmpher, Washingtun. D10.

UNITED STATES PAT NT OFFICE.

JOSEPH A. EVANS, OF PHILADELPHIA, PENNSYLVANIA.

SHUTTLE-BOX-OPERATING LEVER FOR LOOIVlS.

SPECIFICATION forming part of Letters Patent No. 405,022, dated June 11,1889.

Application filed December 31, 1888. Serial No. 295,040. (No model.)

To aZZwhom it may concern.-

Be it known that I, JOSEPH A. EVANS, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and Improved.Shuttle-BoX-Operating Lever for Looms, of which the following is afull, clear, and exact description.

My invention relates to an improvement in shuttle-box levers fordrop-box looms, and has for its object to provide a yielding lever ofsimple and economical construction, which will admit of the loom beingoperated at a high speed in perfect safety, and wherein, should thelever be thrown up from any cause, instead of being lifted in the usualway, and pressure be brought to bear simultaneously on both sets ofnotches by the anchor-wings, the lever will yield at the center andcounteractthe unusual strain. The shu ttle-box lever will be thrown up,as above stated, instead of being lifted in the usual way, by reason ofthe loom being stopped just one revolution before a skip-box lift isabout to be made by the anchor, and then started again right on the saidlift. the anchor to a blow or throw on a notch of the lever, thussending the lever up above or in advance of the anchor-wing engaged. Itwill thus be seen that the lever operating under such conditions isliable to be thrown past its normal destination or throw in its upwardmovement as it freely vibrates on its pivot. If the lever passes itsnormal upward throw and such movement was produced by the right-handwing of the anchor, the shuttlebOX would then drop too far down in lesstime than if the weighted end of the lever had been lifted in the usualway. Consequently the notches on the left-hand sideof the lever indescending would meet the advancing lefthand wing of the anchor, and asthe given time for the upward movement of the plunger would not beconsumed the advancing left-hand wingof the anchor would catch thedescending notches, and said left-hand wing by so catching would liftthe lever back again, which would bring the right-hand notches incontact with the right-hand wing again, and" thereby the lever would bebrought to a position parallel with the frame of the loom andtheanchor-wings would be both locked on both sets of notches. Theplunger would Such action changes the lift ofv drawings, forming a partof this specification,

in which similar letters of reference indicate corresponding parts inall the figures.

Figure 1 is a side elevation of the frame of the loom, illustrating theattachment of my improvement. Fig. 2 is a plan View. Fig. 3

is a rear view of the lever detached. Fig. 4 is a bottom plan view ofthe same. Fig. 5 is a transverse section on line a: m, Fig. 4; and Fig.dis a front elevation of one section of the lever.

The prime object of the invention is to im prove the box-lever of apower-loom adapted 8 C ver in two parts and jointing it to work asv forweaving fancy fabrics by making said lefreely as a solid lever, yetyield at the center to permit both ends to go up, should the plunger bearrested in its upward movement, by reason of the anchor-wings becominglocked.

In carrying out the invention, Arepresents one side of the frame of adrop-box loom. B is the shuttle-box, B the shuttle-box rod, and O is theplunger, operated by a cam O, and in the usual manner.

The plunger O is provided with a longit udi nal slot in the upper end,in which a spindle is adjustably secured by a nut (not shown inthedrawings) screwed on its inner end, engaging the inner face of theplunger, and upon said spindle a ball 0 is held to revolve, adapted for.contact with the cam C, which is secured to the projecting endof acounter-shaft G, said shaft being made to extend through a body-slot inthe plunger. By adjustingthe plunger-ball 0 up or down the movement ofthe plunger is regulated. Upon thelower being lifted by the saidplunger. The hub of the anchor-wings is provided upon the inner sidewith a horizontal stud a, (shown in dotted lines, Fig. 2,) from which apin is downwardly projected. The said pin is made to enter a slot in theinner end of the connecting-bar w, the outer end of which is connectedto the lower end of an angle-lever a pivoted at its angle to the upperportion of the loom-frame, as best shown in Fig. 1, the horizontal arm aof said lever being adapted for contact with the pins of thepattern-chain A.

The shuttle-box lever B is centrally pivoted upon a dead-spindle Cextending horizontally outward from the frame A through a longitudinalslot formed in the plunger.

The shuttle-box lever is constructed in two equal sections 1) and b, andthe inner end of each section is beveled from the top downward andoutward, as illustrated. at b in Fig. 6. In the front face of onesection I) and in the rear face of the other section Z) a surface recessl) is produced at the beveled end, the transverse wall of which recessis inclined in a direction opposite to the beveled end, as is also bestillustrated in Figs 4 and 6. The said inclined wall of the recess isstruck up and carried in direction of the transverse wall to form a lipZ).

In uniting the sections of the lever B the recessed faces are brought incontact and the beveled ends in contact with the inclined wall of therecess Zr of the opposing section, as best illustrated in Figs. 3 and 4,in which position they are normally held by the overlapping lips bMidway between the beveled end of the section and the inclined wall ofthe surface recess an aperture Zfis made, through which the dead-spindleC projects. Between the center of each lever-section and the beveled enda slightly-curved projection d is formed upon the inner face at a rightangle to the axis, as best shown in Figs. 3,4, and 5, and the innerinclined edge of the said proj ection is provided with stepped notchescl, the upper wall of which notches is preferably circular and the outerwall perpendicular, as best illustrated in Fig. 5. The notches d are soarranged that the upper notch will be located at the inner end of theprojection and the lower notch at the intersection with the body of thesections.

A vertical ear E is formed upon the lower edge of each lever section,and a tensionspring E is attached, respectively, to the approaching earswhen the lever-sections are united. The outer end of the lever-section bis attached to the shuttle-box rod B, and the equivalent end of thesection Z) is provided with a weight 6, firmly secured thereto.

The spring E is of sufficient tension only to prevent the jointedlever-sections from yielding upon the sudden start ng of the loom inmaking a skip-box lift.

The weight of the shuttle-box upon the lever-section b is sufficient tokeep the said section normally in alignment with the opposing section,and the weight 6 serves the same purpose for the section b. It will thusbe observed that normally the two sections of the lever act as onestraight lever.

The plunger, as represented in Fig. 1, is down. As the counter-shaft Grevolves, which it does continuousl while the loom is in operation, thecam is also revolved, and the swell of the cam passing under theplunger-ball raises the plunger, whereupon the ball r1des upon the cam,the plunger being permitted to fall by gravity. The plunger and theattached anchor-wings are thus given an upand-down movement with everyrevolution of the shaft independent of the connections with thepattern-chain.

In illustrating the operation of aloom wlth my attachment, if the loomis provided, for instance, with four shuttle-boxes, numbered from thetop 1, 2, 3, and 4,-the studs or pins in the pattern-chain are made 'inthree sizes. If it is desired to use a color in the first box, a blankspace in the chain must be brought under the horizontal arm a", as theplain chain represents the first box. If a color in the second box isneeded, the smallest-sized stud is secured in the next link of thechain. The chain is thus built with diiferent-sized studs here andthere, according to the diflierentcolors required to make up the patternof the cloth.

The stud under the lever in Fig. l is the smallest-sized studcorresponding to the second shuttle box. \Vhen the said stud is broughtup to engagement with the horizontal arm a that arm is raised and consequently the body of the angled lever a is moved forward to the left. Theangled lever thus moved will draw upon the anchor-wings and the saidanchor will be revolved a distance corresponding to the height of thechain-stud under the arm a". This move of the anchorwings will place theleft-hand wing directly under the second notch cl of the main leverprojection (l, (counting downward,) so that when the plunger comes upthe said left-hand wing will catch .011 the said notch, and therebyraise the shuttle-box up one box, bringing the second box in properposition. If the next link of the pattern-chain is not provided with astud, the chain-lever will drop the exact dis tance it was raised, andthe anchor-wings will be revolved back again, so that the right-handwing will be under the fourth notch of the right-hand lever projection,and the said wing engaging said notch when the plunger comes up andraises the weight 6, causing the shuttle-boxes to lower one box. Theweight 0 is now up to its full height and the shuttle-boxes down totheir lowest pitch.

It will be readily observed by reference to Fig. that each notch uponthe projections (Z is stepped from the bottom outward. Count: ing thesaid notches upward, the distance of the extension of each notchcorresponds to the size of the respective operating-stud upon thepattern-chain.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with the anchor and shuttle-boxes of a drop-boxloom, of the shuttle-box lever constructed in two sections centrallyunited to swing simultaneously upward by a yielding connection,substantially as set forth.

2. The combination, with the anchor and shuttle-boxes of a drop-boxloom, of the shuttle-box lever above the anchor and constructed in twosections pivoted together on a fixed pivot projecting from theloom-frame to swing upward simultaneously when both sections are struckat the same time by said anchor, and operating as a single part when onesection at a time is struck, substantially as set forth.

3. The combination, with the anchor and shuttle-boxesof a drop-box loom,of a shuttlebox lever constructed in two sections pivoted together andto the loom-frame by a single pivot or stud projecting from said frameabove the anchor to permit of their simultaneous vertical movement, anda spring connecting the two sections below and at opposite sides oftheir pivotal point, substantially as set forth.

4:. The combination, with the anchor and shuttle-boxes of a drop-boxloom, of the shuttle-boX lever constructed in two sections overlapped attheir inner ends, provided with aligning apertures in said ends, andeach havinga series of' stepped notches for the anchor to engage, afixed pivot or stud projecting from the loom-frame through saidapertures in the over-' lapped ends of the lever-sections to permit themto swing simultaneouslyupward, each. section having a projection or lipengaging the inner end of the opposite section to hold the two sectionsin horizontal alignment, and a spring connecting the two sections belowand at opposite sides of the pivot, substantially as set forth. I

5. The combination, with the anchor and shuttle-box of a drop-box loom,of a shuttlebox lever consisting of two sections having beveled innerends, a surface recess upon the sections, and a projection integral witheach section having notches stepped therein, substantially as shown anddescribed.

6. In a'drop-box loom, a shuttle-box lever constructed in two sectionsoverlapped at their inner ends, a pivot uniting said overlapped ends andadapted to be connected to a loomframe, the two sections each having aproj ection engaged by the end of the opposite section when the twosections are in alignment and permitting the upward swing of bothsections on the pivot, and a spring uniting the two sections below thepivot and holding them normally in line with each other to operate as asingle part, substantially as set forth.

7. In a drop-box loom, a shuttle-box lever consisting in the twosections 17?), overlapped at their innerinclined ends and provided withpivot-apertures b stepped projections d don their inner sides, inclinedsurface recesses b on the outer faces of each section for the inclinedend of. the opposite section to engage, and projections E, the spring E,secured at its ends to said projections, and the weight 6 on the sectionb.

JOSEPH A. EVANS.

Witnesses:

FRANK P. BEAL, WILLIAM MoQUAID.

